A reaction fluidized bed system and stream guiding type rotating circulating fluidized bed desulphurization equipment including the system

Abstract

A reaction fluidized bed system and stream guiding type rotating circulating fluidized bed desulphurization equipment including the system are provided. The system includes a reaction fluidized bed, first stream guiding blades capable of allowing gas to rotatably rise, a water annular pipe, mist spraying nozzles, desulphurization agent spray nozzles and a desulphurization agent pipe. The desulphurization agent pipe penetrates through the reaction fluidized bed and penetrates into the reaction fluidized bed, and the tail end of the desulphurization agent pipe is closed. The desulphurization agent spray nozzles are mounted at the periphery of the desulphurization agent pipe and are communicated with the inside of the desulphurization agent pipe. The first stream guiding blades are below the desulphurization agent spray nozzles and connected to the periphery of the desulphurization agent pipe. The water annular pipe has a sealed tail and is disposed under the first stream guiding blades. The mist spraying nozzles are mounted at the water annular pipe and communicated with the inside of the water annular pipe. The reaction fluidized bed is also provided with an axial gas inlet, a gas outlet and a water inlet. The desulphurization equipment includes the system, and has advantages of a high desulphurization efficiency, a simple process and procedures, a low running cost, and / or long-term cyclic efficient using of the desulphurization agent.

Description

technical field [0001] The invention relates to a reactive fluidized bed system and a diversion type rotary circulating fluidized bed desulfurization device containing the same, belonging to the technical field of desulfurization. Background technique [0002] my country's iron and steel industry emits a large amount of air pollutants, currently SO 2 It is still the most important gaseous pollutant in steel mills. According to statistics, the flue gas SO in sintering and coking processes in iron and steel enterprises 2 Emissions accounted for the entire iron and steel enterprise flue gas SO 2 more than 60% of emissions. In the face of today's increasingly stringent environmental protection requirements, sintering flue gas SO 2 Emission standards will be more stringent, therefore, it is urgent to continue to develop more efficient desulfurization technology to control SO 2 emissions. [0003] CN106139873A discloses a limestone gypsum method desulfurization device, which...

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Problems solved by technology

The process that is beneficial to this system solves the problem of easy scaling in the lime method tower, and also has the advantage of high desulfurization efficiency, but there will be oxidation by-product Na in the desulfurization liquid of this technology 2 SO 4 generated, Na 2 SO 4 It is difficult to regenerate, the long-term operation consumes a lot of sodium and alkali, and the operating cost is extremely high, and Na 2 SO 4 The presence of will also reduce the quality of desulfurization products

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